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Fasouli ES, Katsantoni E. Age-associated myeloid malignancies - the role of STAT3 and STAT5 in myelodysplastic syndrome and acute myeloid leukemia. FEBS Lett 2024. [PMID: 39048534 DOI: 10.1002/1873-3468.14985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 06/08/2024] [Accepted: 06/17/2024] [Indexed: 07/27/2024]
Abstract
In the last few decades, the increasing human life expectancy has led to the inflation of the elderly population and consequently the escalation of age-related disorders. Biological aging has been associated with the accumulation of somatic mutations in the Hematopoietic Stem Cell (HSC) compartment, providing a fitness advantage to the HSCs leading to clonal hematopoiesis, that includes non-malignant and malignant conditions (i.e. Clonal Hematopoiesis of Indeterminate Potential, Myelodysplastic Syndrome and Acute Myeloid Leukemia). The Janus Kinase-Signal Transducer and Activator of Transcription (JAK-STAT) pathway is a key player in both normal and malignant hematopoiesis. STATs, particularly STAT3 and STAT5, are greatly implicated in normal hematopoiesis, immunity, inflammation, leukemia, and aging. Here, the pleiotropic functions of JAK-STAT pathway in age-associated hematopoietic defects and of STAT3 and STAT5 in normal hematopoiesis, leukemia, and inflammaging are reviewed. Even though great progress has been made in deciphering the role of STATs, further research is required to provide a deeper understanding of the molecular mechanisms of leukemogenesis, as well as novel biomarkers and therapeutic targets for improved management of age-related disorders.
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Affiliation(s)
- Eirini Sofia Fasouli
- Biomedical Research Foundation, Academy of Athens, Basic Research Center, Athens, Greece
| | - Eleni Katsantoni
- Biomedical Research Foundation, Academy of Athens, Basic Research Center, Athens, Greece
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2
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Cheng Q, Yang X, Zou T, Sun L, Zhang X, Deng L, Wu M, Gai W, Jiang H, Guo T, Lu Y, Dong J, Niu C, Pan W, Zhang J. RACK1 enhances STAT3 stability and promotes T follicular helper cell development and function during blood-stage Plasmodium infection in mice. PLoS Pathog 2024; 20:e1012352. [PMID: 39024388 PMCID: PMC11288429 DOI: 10.1371/journal.ppat.1012352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 07/30/2024] [Accepted: 06/19/2024] [Indexed: 07/20/2024] Open
Abstract
CD4+ T cells are central mediators of protective immunity to blood-stage malaria, particularly for their capacity in orchestrating germinal center reaction and generating parasite-specific high-affinity antibodies. T follicular helper (Tfh) cells are predominant CD4+ effector T cell subset implicated in these processes, yet the factors and detailed mechanisms that assist Tfh cell development and function during Plasmodium infection are largely undefined. Here we provide evidence that receptor for activated C kinase 1 (RACK1), an adaptor protein of various intracellular signals, is not only important for CD4+ T cell expansion as previously implied but also plays a prominent role in Tfh cell differentiation and function during blood-stage Plasmodium yoelii 17XNL infection. Consequently, RACK1 in CD4+ T cells contributes significantly to germinal center formation, parasite-specific IgG production, and host resistance to the infection. Mechanistic exploration detects specific interaction of RACK1 with STAT3 in P. yoelii 17XNL-responsive CD4+ T cells, ablation of RACK1 leads to defective STAT3 phosphorylation, accompanied by substantially lower amount of STAT3 protein in CD4+ T cells, whereas retroviral overexpression of RACK1 or STAT3 in RACK1-deficient CD4+ T cells greatly restores STAT3 activity and Bcl-6 expression under the Tfh polarization condition. Further analyses suggest RACK1 positively regulates STAT3 stability by inhibiting the ubiquitin-proteasomal degradation process, thus promoting optimal STAT3 activity and Bcl-6 induction during Tfh cell differentiation. These findings uncover a novel mechanism by which RACK1 participates in posttranslational regulation of STAT3, Tfh cell differentiation, and subsequent development of anti-Plasmodium humoral immunity.
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Affiliation(s)
- Qianqian Cheng
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Xiqin Yang
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Tao Zou
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Lin Sun
- Shanghai Immune Therapy Institute, Shanghai Jiao Tong University School of Medicine-Affiliated Renji Hospital, Shanghai, China
| | - Xueting Zhang
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Lijiao Deng
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Mengyao Wu
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Wenbin Gai
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Hui Jiang
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Tingting Guo
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Yuchen Lu
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Jie Dong
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Chunxiao Niu
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Weiqing Pan
- Department of Tropical Diseases, Navy Medical University, Shanghai, China
| | - Jiyan Zhang
- Beijing Institute of Basic Medical Sciences, Beijing, China
- Chinese Institute for Brain Research, Beijing, China
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3
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Yamashita M, Morio T. AIOLOS-Associated Inborn Errors of Immunity. J Clin Immunol 2024; 44:128. [PMID: 38773004 PMCID: PMC11108880 DOI: 10.1007/s10875-024-01730-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/30/2024] [Indexed: 05/23/2024]
Abstract
AIOLOS, encoded by the IKZF3 gene, belongs to the Ikaros zinc finger transcription factor family and plays a pivotal role in regulating lymphocyte development. Recently, heterozygous missense loss-of-function variants within the DNA-binding domain of the IKZF3 gene (G159R, N160S, and G191R) have been identified in patients with inborn errors of immunity (IEI). Additionally, a missense and a truncating variant (E82K and Q402X) leading to the AIOLOS haploinsufficiency have been documented. The majority of individuals with AIOLOS-associated IEI manifest recurrent sinopulmonary infections, as well as various bacterial and viral infections. The patients carrying the AIOLOSN160S variant exhibit severe immunodeficient phenotypes. In contrast, patients harboring AIOLOS haploinsufficient variants predominantly present with clinical phenotypes associated with immune dysregulation. A varying degree of B-lymphopenia and hypoimmunoglobulinemia was noted in approximately half of the patients. Mouse models of AIOLOSG159R and AIOLOSN160S variants (AiolosG158R and AiolosN159S in mice, respectively) recapitulated most of the immune abnormalities observed in the patients. Among these models, AiolosG158R mice prominently exhibited defects in early B cell differentiation resulting from mutant Aiolos interfering with Ikaros function through heterodimer formation. In contrast, AiolosN159S mice did not manifest early B cell differentiation defects. However, they displayed a distinct immune abnormality characterized by impaired induction of CD62L expression in lymphocytes, which is likely attributable to dysfunction of Ikaros, leading to defective lymphocyte homing to lymph nodes. Considering the diverse clinical phenotypes observed in the reported cases and the distinct molecular pathogenesis associated with each variant, further studies with more patients with AIOLOS-associated IEI would contribute to a better understanding of the clinical spectrum and underlying molecular mechanisms associated with this disorder.
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Affiliation(s)
- Motoi Yamashita
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, 1-7-22, Suehiro-cho, Tsurumi, Yokohama, Kanagawa, 230-0045, Japan
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, 113-8519, Japan
| | - Tomohiro Morio
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, 113-8519, Japan.
- Laboratory of Immunology and Molecular Medicine, Advanced Research Institute, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo, Tokyo, 113-8519, Japan.
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4
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Jones DM, Tuazon JA, Read KA, Leonard MR, Pokhrel S, Sreekumar BK, Warren RT, Yount JS, Collins PL, Oestreich KJ. Cytotoxic Programming of CD4+ T Cells Is Regulated by Opposing Actions of the Related Transcription Factors Eos and Aiolos. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:1129-1141. [PMID: 38363226 PMCID: PMC10948294 DOI: 10.4049/jimmunol.2300748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/26/2024] [Indexed: 02/17/2024]
Abstract
In contrast to the "helper" activities of most CD4+ T effector subsets, CD4+ cytotoxic T lymphocytes (CD4-CTLs) perform functions normally associated with CD8+ T and NK cells. Specifically, CD4-CTLs secrete cytotoxic molecules and directly target and kill compromised cells in an MHC class II-restricted fashion. The functions of these cells have been described in diverse immunological contexts, including their ability to provide protection during antiviral and antitumor responses, as well as being implicated in autoimmunity. Despite their significance to human health, the complete mechanisms that govern their programming remain unclear. In this article, we identify the Ikaros zinc finger transcription factor Eos (Ikzf4) as a positive regulator of CD4-CTL differentiation during murine immune responses against influenza virus infection. We find that the frequency of Eos+ cells is elevated in lung CD4-CTL populations and that the cytotoxic gene program is compromised in Eos-deficient CD4+ T cells. Consequently, we observe a reduced frequency and number of lung-residing, influenza virus-responsive CD4-CTLs in the absence of Eos. Mechanistically, we determine that this is due, at least in part, to reduced expression of IL-2 and IL-15 cytokine receptor subunits on the surface of Eos-deficient CD4+ T cells, both of which support the CD4-CTL program. Finally, we find that Aiolos, a related Ikaros family member and known CD4-CTL antagonist, represses Eos expression by antagonizing STAT5-dependent activation of the Ikzf4 promoter. Collectively, our findings reveal a mechanism wherein Eos and Aiolos act in opposition to regulate cytotoxic programming of CD4+ T cells.
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Affiliation(s)
- Devin M Jones
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH
- Biomedical Sciences Graduate Program, Columbus, OH
| | - Jasmine A Tuazon
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH
- Biomedical Sciences Graduate Program, Columbus, OH
- Medical Scientist Training Program, Columbus, OH
| | - Kaitlin A Read
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH
- Biomedical Sciences Graduate Program, Columbus, OH
- Department of Microbiology, University of Pennsylvania, Philadelphia, PA
| | - Melissa R Leonard
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH
- Combined Anatomic Pathology Residency/Ph.D. Program, The Ohio State University College of Veterinary Medicine, Columbus, OH
| | - Srijana Pokhrel
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH
| | - Bharath K Sreekumar
- Department of Medicine; Gladstone Institute of Virology and Immunology, San Francisco, CA
| | - Robert T Warren
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH
| | - Jacob S Yount
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH
| | - Patrick L Collins
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH
- Pelotonia Institute for Immuno-Oncology; The Ohio State Comprehensive Cancer Center, Columbus, OH
| | - Kenneth J Oestreich
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH
- Pelotonia Institute for Immuno-Oncology; The Ohio State Comprehensive Cancer Center, Columbus, OH
- Infectious Diseases Institute; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH
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5
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Rodrigues de Oliveira B, Iansavitchous J, Rysan H, Wang WC, Sams MP, Knight D, Xu LS, Jeong J, Qu TP, Zorzi AP, DeKoter RP. IKZF3/Aiolos H195Y mutation identified in a mouse model of B cell leukemia results in altered DNA binding and altered STAT5-dependent gene expression. Gene 2024; 900:148131. [PMID: 38216003 DOI: 10.1016/j.gene.2024.148131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/02/2024] [Indexed: 01/14/2024]
Abstract
Precursor B cell acute lymphoblastic leukemia (Pre-B-ALL) arises from developing B cells and frequently involves mutations in genes encoding transcription factors. In this study, we investigated the function of mutations in the transcription factor IKZF3 (Aiolos), R137* and H195Y, discovered in a mouse model of pre-B-ALL. R137* IKZF3 mutation resulted in a truncated protein, while electrophoretic mobility shift assay showed that H195Y IKZF3 mutation resulted in a protein with altered DNA binding. 38B9 pre-B cell lines were generated expressing WT and H195Y IKZF3 proteins. Anti-IKZF3 ChIP-seq showed that H195Y IKZF3 interacted with a larger number of sites that were different than WT IKZF3. Treatment with interleukin-7 induced changes in gene expression in 38B9 cells expressing WT IKZF3, but did not induce any changes in gene expression in cells expressing H195Y IKZF3. Anti-STAT5 ChIP-seq showed that expression of H195Y IKZF3 resulted in redistribution of STAT5 binding sites in the genome. H195Y IKZF3 binding sites overlapped with a subset of STAT5 binding sites, including in the promoter of the Cish gene. These findings suggest that H195Y mutation of IKZF3 results in altered DNA binding specificity and altered binding of STAT5 to target genes.
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Affiliation(s)
- Bruno Rodrigues de Oliveira
- Department of Microbiology & Immunology and the Center for Human Immunology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - James Iansavitchous
- Department of Microbiology & Immunology and the Center for Human Immunology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Heidi Rysan
- Department of Microbiology & Immunology and the Center for Human Immunology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Wei Cen Wang
- Department of Microbiology & Immunology and the Center for Human Immunology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Mia P Sams
- Department of Microbiology & Immunology and the Center for Human Immunology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Devon Knight
- Department of Microbiology & Immunology and the Center for Human Immunology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Li S Xu
- Department of Microbiology & Immunology and the Center for Human Immunology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Jeewoo Jeong
- Department of Microbiology & Immunology and the Center for Human Immunology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Thomas P Qu
- Department of Microbiology & Immunology and the Center for Human Immunology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Alexandra P Zorzi
- Department of Paediatrics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Rodney P DeKoter
- Department of Microbiology & Immunology and the Center for Human Immunology, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada; Division of Genetics and Development, Children's Health Research Institute, Lawson Research Institute, London, Ontario, Canada.
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6
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Inagaki T, Wang KH, Kumar A, Izumiya C, Miura H, Komaki S, Davis RR, Tepper CG, Katano H, Shimoda M, Izumiya Y. KSHV vIL-6 enhances inflammatory responses by epigenetic reprogramming. PLoS Pathog 2023; 19:e1011771. [PMID: 37934757 PMCID: PMC10656005 DOI: 10.1371/journal.ppat.1011771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/17/2023] [Accepted: 10/23/2023] [Indexed: 11/09/2023] Open
Abstract
Kaposi sarcoma-associated herpesvirus (KSHV) inflammatory cytokine syndrome (KICS) is a newly described chronic inflammatory disease condition caused by KSHV infection and is characterized by high KSHV viral load and sustained elevations of serum KSHV-encoded IL-6 (vIL-6) and human IL-6 (hIL-6). KICS has significant immortality and greater risks of other complications, including malignancies. Although prolonged inflammatory vIL-6 exposure by persistent KSHV infection is expected to have key roles in subsequent disease development, the biological effects of prolonged vIL-6 exposure remain elusive. Using thiol(SH)-linked alkylation for the metabolic (SLAM) sequencing and Cleavage Under Target & Release Using Nuclease analysis (CUT&RUN), we studied the effect of prolonged vIL-6 exposure in chromatin landscape and resulting cytokine production. The studies showed that prolonged vIL-6 exposure increased Bromodomain containing 4 (BRD4) and histone H3 lysine 27 acetylation co-occupancies on chromatin, and the recruitment sites were frequently co-localized with poised RNA polymerase II with associated enzymes. Increased BRD4 recruitment on promoters was associated with increased and prolonged NF-κB p65 binding after the lipopolysaccharide stimulation. The p65 binding resulted in quicker and sustained transcription bursts from the promoters; this mechanism increased total amounts of hIL-6 and IL-10 in tissue culture. Pretreatment with the BRD4 inhibitors, OTX015 and MZ1, eliminated the enhanced inflammatory cytokine production. These findings suggest that persistent vIL-6 exposure may establish a chromatin landscape favorable for the reactivation of inflammatory responses in monocytes. This epigenetic memory may explain the greater risk of chronic inflammatory disease development in KSHV-infected individuals.
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Affiliation(s)
- Tomoki Inagaki
- Department of Dermatology, School of Medicine, the University of California Davis (UC Davis), Sacramento, California, United States of America
| | - Kang-Hsin Wang
- Department of Dermatology, School of Medicine, the University of California Davis (UC Davis), Sacramento, California, United States of America
| | - Ashish Kumar
- Department of Dermatology, School of Medicine, the University of California Davis (UC Davis), Sacramento, California, United States of America
| | - Chie Izumiya
- Department of Dermatology, School of Medicine, the University of California Davis (UC Davis), Sacramento, California, United States of America
| | - Hiroki Miura
- Department of Dermatology, School of Medicine, the University of California Davis (UC Davis), Sacramento, California, United States of America
| | - Somayeh Komaki
- Department of Dermatology, School of Medicine, the University of California Davis (UC Davis), Sacramento, California, United States of America
| | - Ryan R. Davis
- Department of Pathology and Laboratory Medicine, School of Medicine, UC Davis, Sacramento, California, United States of America
| | - Clifford G. Tepper
- Department of Biochemistry and Molecular Medicine, School of Medicine, UC Davis, Sacramento, California, United States of America
| | - Harutaka Katano
- Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Michiko Shimoda
- Department of Dermatology, School of Medicine, the University of California Davis (UC Davis), Sacramento, California, United States of America
| | - Yoshihiro Izumiya
- Department of Dermatology, School of Medicine, the University of California Davis (UC Davis), Sacramento, California, United States of America
- Department of Biochemistry and Molecular Medicine, School of Medicine, UC Davis, Sacramento, California, United States of America
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7
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Tuazon JA, Read KA, Sreekumar BK, Roettger JE, Yaeger MJ, Varikuti S, Pokhrel S, Jones DM, Warren RT, Powell MD, Rasheed MN, Duncan EG, Childs LM, Gowdy KM, Oestreich KJ. Eos Promotes TH2 Differentiation by Interacting with and Propagating the Activity of STAT5. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:365-376. [PMID: 37314436 PMCID: PMC10524986 DOI: 10.4049/jimmunol.2200861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 05/18/2023] [Indexed: 06/15/2023]
Abstract
The Ikaros zinc-finger transcription factor Eos has largely been associated with sustaining the immunosuppressive functions of regulatory T cells. Paradoxically, Eos has more recently been implicated in promoting proinflammatory responses in the dysregulated setting of autoimmunity. However, the precise role of Eos in regulating the differentiation and function of effector CD4+ T cell subsets remains unclear. In this study, we find that Eos is a positive regulator of the differentiation of murine CD4+ TH2 cells, an effector population that has been implicated in both immunity against helminthic parasites and the induction of allergic asthma. Using murine in vitro TH2 polarization and an in vivo house dust mite asthma model, we find that EosKO T cells exhibit reduced expression of key TH2 transcription factors, effector cytokines, and cytokine receptors. Mechanistically, we find that the IL-2/STAT5 axis and its downstream TH2 gene targets are one of the most significantly downregulated pathways in Eos-deficient cells. Consistent with these observations, we find that Eos forms, to our knowledge, a novel complex with and supports the tyrosine phosphorylation of STAT5. Collectively, these data define a regulatory mechanism whereby Eos propagates STAT5 activity to facilitate TH2 cell differentiation.
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Affiliation(s)
- Jasmine A. Tuazon
- Department of Microbial Infection and Immunity; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
- Biomedical Sciences Graduate Program, The Ohio State University College of Medicine, Columbus, OH, 43210; USA
- Medical Scientist Training Program, The Ohio State University College of Medicine, Columbus, OH, 43210; USA
| | - Kaitlin A. Read
- Department of Microbial Infection and Immunity; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
- Biomedical Sciences Graduate Program, The Ohio State University College of Medicine, Columbus, OH, 43210; USA
| | | | - Jack E. Roettger
- Department of Microbial Infection and Immunity; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
- Biomedical Sciences Graduate Program, The Ohio State University College of Medicine, Columbus, OH, 43210; USA
| | - Michael J. Yaeger
- Division of Pulmonary, Critical Care and Sleep Medicine; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
| | - Sanjay Varikuti
- Division of Pulmonary, Critical Care and Sleep Medicine; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
| | - Srijana Pokhrel
- Department of Microbial Infection and Immunity; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
| | - Devin M. Jones
- Department of Microbial Infection and Immunity; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
- Biomedical Sciences Graduate Program, The Ohio State University College of Medicine, Columbus, OH, 43210; USA
| | - Robert T. Warren
- Department of Microbial Infection and Immunity; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
| | - Michael D. Powell
- Department of Microbiology and Immunology; Emory University School of Medicine, Atlanta, GA, 30322; USA
| | - Mustafa N. Rasheed
- Department of Emergency Medicine; Emory University Medical Center, Atlanta, GA, 30322; USA
| | | | - Lauren M. Childs
- Department of Mathematics; Virginia Tech, Blacksburg, VA, 24061; USA
| | - Kymberly M. Gowdy
- Division of Pulmonary, Critical Care and Sleep Medicine; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
| | - Kenneth J. Oestreich
- Department of Microbial Infection and Immunity; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
- Pelotonia Institute for Immuno-Oncology; The Ohio State Comprehensive Cancer Center, Columbus, Ohio, 43210; USA
- Infectious Diseases Institute; The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, 43210; USA
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8
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Harker JA, Greene TT, Barnett BE, Bao P, Dolgoter A, Zuniga EI. IL-6 and IL-27 play both distinct and redundant roles in regulating CD4 T-cell responses during chronic viral infection. Front Immunol 2023; 14:1221562. [PMID: 37583704 PMCID: PMC10424726 DOI: 10.3389/fimmu.2023.1221562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/10/2023] [Indexed: 08/17/2023] Open
Abstract
The IL-6 cytokine family signals through the common signal transduction molecule gp130 combined with a cytokine-specific receptor. Gp130 signaling on CD4 T cells is vital in controlling chronic infection of mice with lymphocytic choriomeningitis virus clone 13 (LCMV Cl13), but the precise role of individual members of the IL-6 cytokine family is not fully understood. Transcriptional analysis highlighted the importance of gp130 signaling in promoting key processes in CD4 T cells after LCMV Cl13 infection, particularly genes associated with T follicular helper (Tfh) cell differentiation and IL-21 production. Further, Il27r-/-Il6ra-/- mice failed to generate antibody or CD8 T-cell immunity and to control LCMV Cl13. Transcriptomics and phenotypic analyses of Il27r-/-Il6ra-/- Tfh cells revealed that IL-6R and IL-27R signaling was required to activate key pathways within CD4 T cells. IL-6 and IL-27 signaling has distinct and overlapping roles, with IL-6 regulating Tfh differentiation, IL-27 regulating CD4 T cell survival, and both redundantly promoting IL-21.
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Affiliation(s)
- James A. Harker
- Division of Molecular Biology, Department of Biological Sciences, University of California San Diego, La Jolla, CA, United States
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Trever T. Greene
- Division of Molecular Biology, Department of Biological Sciences, University of California San Diego, La Jolla, CA, United States
| | - Burton E. Barnett
- Division of Molecular Biology, Department of Biological Sciences, University of California San Diego, La Jolla, CA, United States
| | - Phuc Bao
- Division of Molecular Biology, Department of Biological Sciences, University of California San Diego, La Jolla, CA, United States
| | - Aleksandr Dolgoter
- Division of Molecular Biology, Department of Biological Sciences, University of California San Diego, La Jolla, CA, United States
| | - Elina I. Zuniga
- Division of Molecular Biology, Department of Biological Sciences, University of California San Diego, La Jolla, CA, United States
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9
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Read KA, Jones DM, Pokhrel S, Hales EDS, Varkey A, Tuazon JA, Eisele CD, Abdouni O, Saadey A, Leonard MR, Warren RT, Powell MD, Boss JM, Hemann EA, Yount JS, Xin G, Ghoneim HE, Lio CWJ, Freud AG, Collins PL, Oestreich KJ. Aiolos represses CD4 + T cell cytotoxic programming via reciprocal regulation of T FH transcription factors and IL-2 sensitivity. Nat Commun 2023; 14:1652. [PMID: 36964178 PMCID: PMC10039023 DOI: 10.1038/s41467-023-37420-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 03/16/2023] [Indexed: 03/26/2023] Open
Abstract
During intracellular infection, T follicular helper (TFH) and T helper 1 (TH1) cells promote humoral and cell-mediated responses, respectively. Another subset, CD4-cytotoxic T lymphocytes (CD4-CTLs), eliminate infected cells via functions typically associated with CD8+ T cells. The mechanisms underlying differentiation of these populations are incompletely understood. Here, we identify the transcription factor Aiolos as a reciprocal regulator of TFH and CD4-CTL programming. We find that Aiolos deficiency results in downregulation of key TFH transcription factors, and consequently reduced TFH differentiation and antibody production, during influenza virus infection. Conversely, CD4-CTL programming is elevated, including enhanced Eomes and cytolytic molecule expression. We further demonstrate that Aiolos deficiency allows for enhanced IL-2 sensitivity and increased STAT5 association with CD4-CTL gene targets, including Eomes, effector molecules, and IL2Ra. Thus, our collective findings identify Aiolos as a pivotal regulator of CD4-CTL and TFH programming and highlight its potential as a target for manipulating CD4+ T cell responses.
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Affiliation(s)
- Kaitlin A Read
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Biomedical Sciences Graduate Program, Columbus, OH, 43210, USA
| | - Devin M Jones
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Biomedical Sciences Graduate Program, Columbus, OH, 43210, USA
| | - Srijana Pokhrel
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
| | - Emily D S Hales
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
| | - Aditi Varkey
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
| | - Jasmine A Tuazon
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Biomedical Sciences Graduate Program, Columbus, OH, 43210, USA
- Medical Scientist Training Program, Columbus, OH, 43210, USA
| | - Caprice D Eisele
- Biomedical Sciences Graduate Program, Columbus, OH, 43210, USA
- Department of Pathology, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
| | - Omar Abdouni
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
| | - Abbey Saadey
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Biomedical Sciences Graduate Program, Columbus, OH, 43210, USA
| | - Melissa R Leonard
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Combined Anatomic Pathology Residency/PhD Program, The Ohio State University College of Veterinary Medicine, Columbus, USA
| | - Robert T Warren
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
| | - Michael D Powell
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Jeremy M Boss
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Emily A Hemann
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Infectious Diseases Institute, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
| | - Jacob S Yount
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Infectious Diseases Institute, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
| | - Gang Xin
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Pelotonia Institute for Immuno-Oncology, The Ohio State Comprehensive Cancer Center, Columbus, OH, 43210, USA
| | - Hazem E Ghoneim
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Pelotonia Institute for Immuno-Oncology, The Ohio State Comprehensive Cancer Center, Columbus, OH, 43210, USA
| | - Chan-Wang J Lio
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Pelotonia Institute for Immuno-Oncology, The Ohio State Comprehensive Cancer Center, Columbus, OH, 43210, USA
| | - Aharon G Freud
- Department of Pathology, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Pelotonia Institute for Immuno-Oncology, The Ohio State Comprehensive Cancer Center, Columbus, OH, 43210, USA
| | - Patrick L Collins
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
- Pelotonia Institute for Immuno-Oncology, The Ohio State Comprehensive Cancer Center, Columbus, OH, 43210, USA
| | - Kenneth J Oestreich
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA.
- Infectious Diseases Institute, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA.
- Pelotonia Institute for Immuno-Oncology, The Ohio State Comprehensive Cancer Center, Columbus, OH, 43210, USA.
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10
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Javed A, Santos-França PL, Mattar P, Cui A, Kassem F, Cayouette M. Ikaros family proteins redundantly regulate temporal patterning in the developing mouse retina. Development 2023; 150:286611. [PMID: 36537580 DOI: 10.1242/dev.200436] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 12/06/2022] [Indexed: 12/24/2022]
Abstract
Temporal identity factors regulate competence of neural progenitors to generate specific cell types in a time-dependent manner, but how they operate remains poorly defined. In the developing mouse retina, the Ikaros zinc-finger transcription factor Ikzf1 regulates production of early-born cell types, except cone photoreceptors. In this study we show that, during early stages of retinal development, another Ikaros family protein, Ikzf4, functions redundantly with Ikzf1 to regulate cone photoreceptor production. Using CUT&RUN and functional assays, we show that Ikzf4 binds and represses genes involved in late-born rod photoreceptor specification, hence favoring cone production. At late stages, when Ikzf1 is no longer expressed in progenitors, we show that Ikzf4 re-localizes to target genes involved in gliogenesis and is required for Müller glia production. We report that Ikzf4 regulates Notch signaling genes and is sufficient to activate the Hes1 promoter through two Ikzf GGAA-binding motifs, suggesting a mechanism by which Ikzf4 may influence gliogenesis. These results uncover a combinatorial role for Ikaros family members during nervous system development and provide mechanistic insights on how they temporally regulate cell fate output.
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Affiliation(s)
- Awais Javed
- Cellular Neurobiology Research Unit, Institut de recherches cliniques de Montréal (IRCM), Montreal H2W 1R7, Canada
- Molecular Biology Program, Université de Montréal, Montreal H3T 1J4, Canada
| | - Pedro L Santos-França
- Cellular Neurobiology Research Unit, Institut de recherches cliniques de Montréal (IRCM), Montreal H2W 1R7, Canada
- Molecular Biology Program, Université de Montréal, Montreal H3T 1J4, Canada
| | - Pierre Mattar
- Cellular Neurobiology Research Unit, Institut de recherches cliniques de Montréal (IRCM), Montreal H2W 1R7, Canada
| | - Allie Cui
- Cellular Neurobiology Research Unit, Institut de recherches cliniques de Montréal (IRCM), Montreal H2W 1R7, Canada
| | - Fatima Kassem
- Cellular Neurobiology Research Unit, Institut de recherches cliniques de Montréal (IRCM), Montreal H2W 1R7, Canada
- Integrated Program in Neuroscience, McGill University, Montreal H3A 0G4, Canada
| | - Michel Cayouette
- Cellular Neurobiology Research Unit, Institut de recherches cliniques de Montréal (IRCM), Montreal H2W 1R7, Canada
- Molecular Biology Program, Université de Montréal, Montreal H3T 1J4, Canada
- Integrated Program in Neuroscience, McGill University, Montreal H3A 0G4, Canada
- Department of Medicine, Université de Montréal, Montreal H3T 1J4, Canada
- Department of Anatomy and Cell Biology, Division of Experimental Medicine, McGill University, Montreal H3A 0G4, Canada
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11
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Qi J, Liu C, Bai Z, Li X, Yao G. T follicular helper cells and T follicular regulatory cells in autoimmune diseases. Front Immunol 2023; 14:1178792. [PMID: 37187757 PMCID: PMC10175690 DOI: 10.3389/fimmu.2023.1178792] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/13/2023] [Indexed: 05/17/2023] Open
Abstract
T follicular helper (Tfh) cells are heterogeneous and mainly characterized by expressing surface markers CXCR5, ICOS, and PD-1; cytokine IL-21; and transcription factor Bcl6. They are crucial for B-cell differentiation into long-lived plasma cells and high-affinity antibody production. T follicular regulatory (Tfr) cells were described to express markers of conventional T regulatory (Treg) cells and Tfh cells and were able to suppress Tfh-cell and B-cell responses. Evidence has revealed that the dysregulation of Tfh and Tfr cells is positively associated with the pathogenic processes of autoimmune diseases. Herein, we briefly introduce the phenotype, differentiation, and function of Tfh and Tfr cells, and review their potential roles in autoimmune diseases. In addition, we discuss perspectives to develop novel therapies targeting Tfh/Tfr balance.
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Affiliation(s)
- Jingjing Qi
- Department of Immunology, College of Basic Medical Science, Dalian Medical University, Dalian, Liaoning, China
- *Correspondence: Genhong Yao, ; Jingjing Qi,
| | - Chang Liu
- Department of Rheumatology and Immunology, Dalian Municipal Central Hospital, Dalian, Liaoning, China
| | - Ziran Bai
- Department of Immunology, College of Basic Medical Science, Dalian Medical University, Dalian, Liaoning, China
| | - Xia Li
- Department of Immunology, College of Basic Medical Science, Dalian Medical University, Dalian, Liaoning, China
| | - Genhong Yao
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
- *Correspondence: Genhong Yao, ; Jingjing Qi,
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12
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Powell MD, Lu P, Neeld DK, Kania AK, George-Alexander LEM, Bally AP, Scharer CD, Boss JM. IL-6/STAT3 Signaling Axis Enhances and Prolongs Pdcd1 Expression in Murine CD8 T Cells. Immunohorizons 2022; 6:872-882. [PMID: 36547389 PMCID: PMC10103150 DOI: 10.4049/immunohorizons.2100112] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 12/01/2022] [Indexed: 12/24/2022] Open
Abstract
CD8 cytotoxic T cells are a potent line of defense against invading pathogens. To aid in curtailing aberrant immune responses, the activation status of CD8 T cells is highly regulated. One mechanism in which CD8 T cell responses are dampened is via signaling through the immune-inhibitory receptor Programmed Cell Death Protein-1, encoded by Pdcd1. Pdcd1 expression is regulated through engagement of the TCR, as well as by signaling from extracellular cytokines. Understanding such pathways has influenced the development of numerous clinical treatments. In this study, we showed that signals from the cytokine IL-6 enhanced Pdcd1 expression when paired with TCR stimulation in murine CD8 T cells. Mechanistically, signals from IL-6 were propagated through activation of the transcription factor STAT3, resulting in IL-6-dependent binding of STAT3 to Pdcd1 cis-regulatory elements. Intriguingly, IL-6 stimulation overcame B Lymphocyte Maturation Protein 1-mediated epigenetic repression of Pdcd1, which resulted in a transcriptionally permissive landscape marked by heightened histone acetylation. Furthermore, in vivo-activated CD8 T cells derived from lymphocytic choriomeningitis virus infection required STAT3 for optimal Programmed Cell Death Protein-1 surface expression. Importantly, STAT3 was the only member of the STAT family present at Pdcd1 regulatory elements in lymphocytic choriomeningitis virus Ag-specific CD8 T cells. Collectively, these data define mechanisms by which the IL-6/STAT3 signaling axis can enhance and prolong Pdcd1 expression in murine CD8 T cells.
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Affiliation(s)
- Michael D. Powell
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Peiyuan Lu
- Current Address: Department of Biochemistry and Molecular Biology, School of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250021, China
| | - Dennis K. Neeld
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Anna K. Kania
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
- Current Address: Bloomberg-Kimmel Institute for Cancer Immunotherapy, Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | | | - Alexander P.R. Bally
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
- Current Address: Zoetis Inc, 3185 Rampart Rd, Fort Collins, CO 80521, USA
| | - Christopher D. Scharer
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Jeremy M. Boss
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
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13
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Vita AA, Pullen NA. Exploring the mechanism of berberine-mediated T fh cell immunosuppression. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 105:154343. [PMID: 35901597 PMCID: PMC9948547 DOI: 10.1016/j.phymed.2022.154343] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/29/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Our previous research revealed a novel function of berberine (BBR), a clinically relevant plant-derived alkaloid, as a suppressor of follicular T helper (Tfh) cell proliferation in secondary lymphoid organs of BBR-treated mice that underwent immunization for collagen-induced arthritis (CIA) in DBA1/J mice. Due to the importance of Tfh cell and B cell interactions in the generation of T cell-dependent humoral responses, the suppression of Tfh cell activity may have implications for the general safety of BBR as a prophylactic dietary supplement, and its potential use in antibody-driven autoimmune and hypersensitivity disorders. PURPOSE This research aims to characterize BBR's impact on the activation, differentiation, and proliferation of Tfh cells by examining the expression of key extracellular signaling molecules, as well as the activity of intracellular signaling molecules involved in the Ca2+-calcineurin-NFAT pathway and STAT3 phosphorylation, following activation. STUDY DESIGN In vitro experimental study using primary tissues. METHODS To explore the direct effects of BBR on the proliferation and differentiation of Tfh cells, isolated naïve CD4+ T cells (>95% pure) were activated and differentiated into pre- Tfh cells in the presence or absence of BBR. The resulting Tfh cell populations and the expression of the key extracellular molecules CXCR5, ICOS, and PD-1 were measured. In addition, we examined the impact of BBR treatment on the activity of key intracellular signaling molecules involved in Tfh cell activation and differentiation following TCR ligation and/or CD28 signaling (p-ZAP-70, p-Lck, p-PLCγ1, NFATc1 and intracellular calcium, Ca2+, concentrations), as well as IL-6 signaling (p-STAT3). RESULTS Treatment with BBR significantly reduced the expression of both CXCR5 (p < 0.01) and ICOS (p < 0.005), but not PD-1, and reduced the percentage of Tfh cells within the total CD4+ T cell population. BBR treatment also led to a reduction in intracellular Ca2+ flux, activation of p-STAT3, and IL-21 production. CONCLUSION Our observations provide insight into the mechanism of BBR-mediated Tfh cell suppression and suggest that BBR treatment can directly inhibit Tfh cell activity, perhaps through interfering with cytokine receptor or downstream signaling.
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Affiliation(s)
- Alexandra A Vita
- School of Biological Sciences, University of Northern Colorado, 501 20th St., Campus Box 92, Greeley, CO 80639, United States; Helfgott Research Institute, National University of Natural Medicine, Portland, OR, United States
| | - Nicholas A Pullen
- School of Biological Sciences, University of Northern Colorado, 501 20th St., Campus Box 92, Greeley, CO 80639, United States.
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14
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Lai CY, Marcel N, Yaldiko AW, Delpoux A, Hedrick SM. A Bcl6 Intronic Element Regulates T Follicular Helper Cell Differentiation. THE JOURNAL OF IMMUNOLOGY 2022; 209:1118-1127. [DOI: 10.4049/jimmunol.2100777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 07/07/2022] [Indexed: 01/04/2023]
Abstract
Abstract
In response to an intracellular infectious agent, the immune system produces a specific cellular response as well as a T cell–dependent Ab response. Precursor T cells differentiate into effector T cells, including Th1 cells, and T follicular helper (TFH) cells. The latter cooperate with B cells to form germinal centers and induce the formation of Ab-forming plasmacytes. One major focal point for control of T cell differentiation is the transcription factor BCL6. In this study, we demonstrated that the Bcl6 gene is regulated by FOXO1-binding, cis-acting sequences located in a highly conserved region of the first Bcl6 intron. In both mouse and human T cells, deletion of the tandem FOXO1 binding sites increased the expression of BCL6 and enhanced the proportion of TFH cells. These results reveal a fundamental control point for cellular versus humoral immunity.
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Affiliation(s)
- Chen-Yen Lai
- Molecular Biology Section, Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
| | - Nimi Marcel
- Molecular Biology Section, Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
| | - Allen W. Yaldiko
- Molecular Biology Section, Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
| | - Arnaud Delpoux
- Molecular Biology Section, Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
| | - Stephen M. Hedrick
- Molecular Biology Section, Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
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15
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Lambert K, Diggins KE, Jones BE, Hundhausen C, Maerz MD, Hocking AM, Sanda S, Greenbaum CJ, Linsley PS, Cerosaletti K, Buckner JH. IL-6-Driven pSTAT1 Response Is Linked to T Cell Features Implicated in Early Immune Dysregulation. Front Immunol 2022; 13:935394. [PMID: 35911690 PMCID: PMC9327741 DOI: 10.3389/fimmu.2022.935394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
Elevated levels and enhanced sensing of the pro-inflammatory cytokine interleukin-6 (IL-6) are key features of many autoimmune and inflammatory diseases. To better understand how IL-6 signaling may influence human T cell fate, we investigated the relationships between levels of components of the IL-6R complex, pSTAT responses, and transcriptomic and translational changes in CD4+ and CD8+ T cell subsets from healthy individuals after exposure to IL-6. Our findings highlight the striking heterogeneity in mbIL-6R and gp130 expression and IL-6-driven pSTAT1/3 responses across T cell subsets. Increased mbIL-6R expression correlated with enhanced signaling via pSTAT1 with less impact on pSTAT3, most strikingly in CD4+ naïve T cells. Additionally, IL-6 rapidly induced expression of transcription factors and surface receptors expressed by T follicular helper cells and altered expression of markers of apoptosis. Importantly, many of the features associated with the level of mbIL-6R expression on T cells were recapitulated both in the setting of tocilizumab therapy and when comparing donor CD4+ T cells harboring the genetic variant, IL6R Asp358Ala (rs2228145), known to alter mbIL-6R expression on T cells. Collectively, these findings should be taken into account as we consider the role of IL-6 in disease pathogenesis and translating IL-6 biology into effective therapies for T cell-mediated autoimmune disease.
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Affiliation(s)
- Katharina Lambert
- Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States
| | - Kirsten E. Diggins
- Center for Systems Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States
| | - Britta E. Jones
- Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States
| | - Christian Hundhausen
- Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States
| | - Megan D. Maerz
- Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States
| | - Anne M. Hocking
- Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States
| | - Srinath Sanda
- Immune Tolerance Network, Seattle, WA, United States
- Department of Pediatrics, University of California, San Francisco, CA, United States
| | - Carla J. Greenbaum
- Center for Interventional Immunology and Diabetes Program, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States
| | - Peter S. Linsley
- Center for Systems Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States
| | - Karen Cerosaletti
- Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States
| | - Jane H. Buckner
- Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, United States
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16
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He C, Yang Y, Chen Z, Liu S, Lyu T, Zeng L, Wang L, Li Y, Wang M, Chen H, Zhang F. EZH2 Promotes T Follicular Helper Cell Differentiation Through Enhancing STAT3 Phosphorylation in Patients With Primary Sjögren’s Syndrome. Front Immunol 2022; 13:922871. [PMID: 35795677 PMCID: PMC9252457 DOI: 10.3389/fimmu.2022.922871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectivesEnhancer of zeste homolog 2 (EZH2) is an epigenetic regulator that plays an essential role in immune system development and autoimmune diseases. This study aimed to characterize the role of EZH2 in the pathogenesis of primary Sjögren’s syndrome (pSS).MethodsWe analyzed EZH2 expression in two transcriptomic datasets of peripheral blood mononuclear cells (PBMCs) from pSS patients and healthy controls. We measured EZH2 expression in CD4+ T cells, CD8+ T cells, and CD19+ B cells from pSS patients and healthy controls and correlated EZH2 expression with clinical parameters. We also examined the activation, proliferation, and T-cell differentiation of CD4+ T cells using the EZH2 inhibitor GSK126, EZH2 siRNA, and EZH2-expressing vector. We further examined the STAT3 signaling pathway after EZH2 inhibition and detected Tfh differentiation in EZH2-overexpressed CD4+ T cells with STAT3 knocked down.ResultsEZH2 was upregulated in GSE164885 and GSE48378. EZH2 expression was higher in pSS CD4+ and CD8+ T cells, and EZH2 expression in circulating pSS CD4+ T cells was positively correlated with IgG, IgA, ESR, RF, and the circulating Tfh population. EZH2 inhibition and silencing EZH2 suppressed activation, proliferation, and Tfh differentiation. Furthermore, overexpressing EZH2 promoted activation, proliferation, and Tfh differentiation in CD4+ T cells. EZH2 inhibition attenuated STAT3 phosphorylation in CD4+ T cells. STAT3 knockdown abrogated EZH2-promoted Tfh differentiation.ConclusionsEZH2 expression was abnormally elevated in pSS CD4+ T cells, which facilitated Tfh differentiation of CD4+ T cells by enhancing STAT3 phosphorylation. EZH2 promotes Tfh differentiation and might be implicated in pSS pathogenesis.
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Affiliation(s)
- Chengmei He
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China
| | - Yanlei Yang
- Medical Science Research Centre, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhilei Chen
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China
| | - Suying Liu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China
| | - Taibiao Lyu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China
| | - Liuting Zeng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China
| | - Li Wang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China
| | - Yongzhe Li
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Mu Wang
- Department of Stomatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Hua Chen
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China
- *Correspondence: Hua Chen, ; Fengchun Zhang,
| | - Fengchun Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China
- *Correspondence: Hua Chen, ; Fengchun Zhang,
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17
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Schroeder JH, Howard JK, Lord GM. Transcription factor-driven regulation of ILC1 and ILC3. Trends Immunol 2022; 43:564-579. [PMID: 35618586 PMCID: PMC10166716 DOI: 10.1016/j.it.2022.04.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 10/18/2022]
Abstract
Mammalian innate lymphoid cells (ILCs) have functional relevance under both homeostatic and disease settings, such as inflammatory bowel disease (IBD), particularly in the context of maintaining the integrity of mucosal surfaces. Early reports highlighted group 1 and 3 ILC regulatory transcription factors (TFs), T-box expressed in T cells (T-bet; Tbx21) and RAR-related orphan nuclear receptor γt (RORγt; Rorc), as key regulators of ILC biology. Since then, other canonical TFs have been shown to have a role in the development and function of ILC subsets. In this review, we focus on recent insights into the balance between mature ILC1 and ILC3 based on these TFs and how they interact with other key cell-intrinsic molecular pathways. We outline how this TF interplay might be explored to identify novel candidate therapeutic avenues for human diseases.
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18
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Yamashita M, Morio T. AIOLOS Variants Causing Immunodeficiency in Human and Mice. Front Immunol 2022; 13:866582. [PMID: 35444653 PMCID: PMC9014263 DOI: 10.3389/fimmu.2022.866582] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 03/14/2022] [Indexed: 11/17/2022] Open
Abstract
AIOLOS is encoded by IKZF3 and is a member of the IKAROS zinc finger transcription factor family. Heterozygous missense variants in the second zinc finger of AIOLOS have recently been reported to be found in the families of patients with inborn errors of immunity. The AIOLOSG159R variant was identified in patients with B-lymphopenia and familial Epstein–Barr virus-associated lymphoma. Early B-cell progenitors were significantly reduced in the bone marrow of patients with AIOLOSG159R. Another variant, AIOLOSN160S was identified in the patients presented with hypogammaglobulinemia, susceptibility to Pneumocystis jirovecii pneumonia, and chronic lymphocytic leukemia. Patients with AIOLOSN160S had mostly normal B cell counts but showed increased levels of CD21lo B cells, decreased CD23 expression, and abrogated CD40 response. Both variants were determined to be loss-of-function. Mouse models harboring the corresponding patient’s variants recapitulated the phenotypes of the patients. AIOLOS is therefore a novel disease-causing gene in human adaptive immune deficiency.
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Affiliation(s)
- Motoi Yamashita
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tomohiro Morio
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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19
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Umans RA, Martin J, Harrigan ME, Patel DC, Chaunsali L, Roshandel A, Iyer K, Powell MD, Oestreich K, Sontheimer H. Transcriptional Regulation of Amino Acid Transport in Glioblastoma Multiforme. Cancers (Basel) 2021; 13:cancers13246169. [PMID: 34944790 PMCID: PMC8699180 DOI: 10.3390/cancers13246169] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Glioblastoma multiforme (GBM) is a highly invasive brain tumor that typically has poor patient outcomes. This is due in part to aggressive tumor expansion within the brain parenchyma. This process is aided by assiduous glutamate release via the System xc- (SXC) cystine–glutamate antiporter. SXC is over-expressed in roughly half of GBM tumors where it is responsible for glutamate-mediated neuronal cell death and provides excess glutamate to fuel tumor-associated epilepsy. Available pharmacological inhibitors have some promise, although they lack specificity and have poor bioavailability. Therefore, identifying regulators of SXC may provide a superior avenue to target GBM. In this study, we identify tumor protein 53 (TP53) as a molecular regulator of SXC in GBM. Abstract Glioblastoma multiforme (GBM) is a deadly brain tumor with a large unmet therapeutic need. Here, we tested the hypothesis that wild-type p53 is a negative transcriptional regulator of SLC7A11, the gene encoding the System xc- (SXC) catalytic subunit, xCT, in GBM. We demonstrate that xCT expression is inversely correlated with p53 expression in patient tissue. Using representative patient derived (PDX) tumor xenolines with wild-type, null, and mutant p53 we show that p53 expression negatively correlates with xCT expression. Using chromatin immunoprecipitation studies, we present a molecular interaction whereby p53 binds to the SLC7A11 promoter, suppressing gene expression in PDX GBM cells. Accordingly, genetic knockdown of p53 increases SLC7A11 transcript levels; conversely, over-expressing p53 in p53-null GBM cells downregulates xCT expression and glutamate release. Proof of principal studies in mice with flank gliomas demonstrate that daily treatment with the mutant p53 reactivator, PRIMA-1Met, results in reduced tumor growth associated with reduced xCT expression. These findings suggest that p53 is a molecular switch for GBM glutamate biology, with potential therapeutic utility.
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Affiliation(s)
- Robyn A. Umans
- Center for Glial Biology in Health, Disease and Cancer, The Fralin Biomedical Research Institute at VTC, Roanoke, VA 24016, USA; (R.A.U.); (J.M.); (M.E.H.)
| | - Joelle Martin
- Center for Glial Biology in Health, Disease and Cancer, The Fralin Biomedical Research Institute at VTC, Roanoke, VA 24016, USA; (R.A.U.); (J.M.); (M.E.H.)
| | - Megan E. Harrigan
- Center for Glial Biology in Health, Disease and Cancer, The Fralin Biomedical Research Institute at VTC, Roanoke, VA 24016, USA; (R.A.U.); (J.M.); (M.E.H.)
| | - Dipan C. Patel
- Department of Neuroscience, University of Virginia School of Medicine, Charlottesville, VA 22903, USA; (D.C.P.); (L.C.)
| | - Lata Chaunsali
- Department of Neuroscience, University of Virginia School of Medicine, Charlottesville, VA 22903, USA; (D.C.P.); (L.C.)
| | - Aarash Roshandel
- College of Agriculture and Life Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA;
| | | | - Michael D. Powell
- Department of Microbiology and Immunity, Emory University School of Medicine, Atlanta, GA 30322, USA;
| | - Ken Oestreich
- Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210, USA;
| | - Harald Sontheimer
- Department of Neuroscience, University of Virginia School of Medicine, Charlottesville, VA 22903, USA; (D.C.P.); (L.C.)
- Correspondence:
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20
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Beurier P, Ricard L, Eshagh D, Malard F, Siblany L, Fain O, Mohty M, Gaugler B, Mekinian A. TFH cells in systemic sclerosis. J Transl Med 2021; 19:375. [PMID: 34461933 PMCID: PMC8407089 DOI: 10.1186/s12967-021-03049-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/20/2021] [Indexed: 12/17/2022] Open
Abstract
Systemic sclerosis is an autoimmune disease characterized by excessive dermal fibrosis with progression to internal organs, vascular impairment and immune dysregulation evidenced by the infiltration of inflammatory cells in affected tissues and the production of auto antibodies. While the pathogenesis remains unclear, several data highlight that T and B cells deregulation is implicated in the disease pathogenesis. Over the last decade, aberrant responses of circulating T follicular helper cells, a subset of CD4 T cells which are able to localise predominantly in the B cell follicles through a high level of chemokine receptor CXCR5 expression are described in pathogenesis of several autoimmune diseases and chronic graft-versus-host-disease. In the present review, we summarized the observed alteration of number and frequency of circulating T follicular helper cells in systemic sclerosis. We described their role in aberrant B cell activation and differentiation though interleukine-21 secretion. We also clarified T follicular helper-like cells involvement in fibrogenesis in both human and mouse model. Finally, because T follicular helper cells are involved in both fibrosis and autoimmune abnormalities in systemic sclerosis patients, we presented the different strategies could be used to target T follicular helper cells in systemic sclerosis, the therapeutic trials currently being carried out and the future perspectives from other auto-immune diseases and graft-versus-host-disease models.
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Affiliation(s)
- Pauline Beurier
- INSERM UMRs 938, Centre de Recherche Saint-Antoine, AP-HP, Hôpital Saint-Antoine, Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Sorbonne Université, 75012, Paris, France.,Sorbonne Université, Paris, France
| | - Laure Ricard
- INSERM UMRs 938, Centre de Recherche Saint-Antoine, AP-HP, Hôpital Saint-Antoine, Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Sorbonne Université, 75012, Paris, France.,Sorbonne Université, Paris, France.,Service D'Hématologie Clinique, AP-HP, Hôpital Saint-Antoine, 75012, Paris, France
| | - Deborah Eshagh
- INSERM UMRs 938, Centre de Recherche Saint-Antoine, AP-HP, Hôpital Saint-Antoine, Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Sorbonne Université, 75012, Paris, France.,Sorbonne Université, Paris, France
| | - Florent Malard
- INSERM UMRs 938, Centre de Recherche Saint-Antoine, AP-HP, Hôpital Saint-Antoine, Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Sorbonne Université, 75012, Paris, France.,Sorbonne Université, Paris, France.,Service D'Hématologie Clinique, AP-HP, Hôpital Saint-Antoine, 75012, Paris, France
| | - Lama Siblany
- INSERM UMRs 938, Centre de Recherche Saint-Antoine, AP-HP, Hôpital Saint-Antoine, Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Sorbonne Université, 75012, Paris, France.,Sorbonne Université, Paris, France
| | - Olivier Fain
- INSERM UMRs 938, Centre de Recherche Saint-Antoine, AP-HP, Hôpital Saint-Antoine, Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Sorbonne Université, 75012, Paris, France.,Sorbonne Université, Paris, France
| | - Mohamad Mohty
- INSERM UMRs 938, Centre de Recherche Saint-Antoine, AP-HP, Hôpital Saint-Antoine, Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Sorbonne Université, 75012, Paris, France.,Sorbonne Université, Paris, France.,Service D'Hématologie Clinique, AP-HP, Hôpital Saint-Antoine, 75012, Paris, France
| | - Béatrice Gaugler
- INSERM UMRs 938, Centre de Recherche Saint-Antoine, AP-HP, Hôpital Saint-Antoine, Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Sorbonne Université, 75012, Paris, France
| | - Arsène Mekinian
- INSERM UMRs 938, Centre de Recherche Saint-Antoine, AP-HP, Hôpital Saint-Antoine, Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Sorbonne Université, 75012, Paris, France. .,Sorbonne Université, Paris, France. .,Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DMU 3iD), AP-HP, Hôpital Saint-Antoine, 75012, Paris, France.
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21
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Choi J, Crotty S. Bcl6-Mediated Transcriptional Regulation of Follicular Helper T cells (T FH). Trends Immunol 2021; 42:336-349. [PMID: 33663954 DOI: 10.1016/j.it.2021.02.002] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/28/2021] [Accepted: 02/02/2021] [Indexed: 02/01/2023]
Abstract
Follicular helper T cells (TFH) are essential B cell-help providers in the formation of germinal centers (GCs), affinity maturation of GC B cells, differentiation of high-affinity antibody-producing plasma cells, and production of memory B cells. The transcription factor (TF) B cell lymphoma 6 (Bcl6) is at the center of gene regulation in TFH biology, including differentiation and function, but how Bcl6 does this, and what additional TFs contribute, remain complex questions. This review focuses on advances in our understanding of Bcl6-mediated gene regulation of TFH functions, and the modulation of TFH by other TFs. These advances may have important implications in deciphering how repressor TFs can regulate many immunological cell types. An improved understanding of TFH biology will likely provide insights into biomedically relevant diseases.
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Affiliation(s)
- Jinyong Choi
- Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology (LJI), La Jolla, CA, USA; Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Shane Crotty
- Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology (LJI), La Jolla, CA, USA; Department of Medicine, Division of Infectious Diseases and Global Public Health, University of California, San Diego (UCSD), La Jolla, CA, USA.
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22
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Read KA, Jones DM, Freud AG, Oestreich KJ. Established and emergent roles for Ikaros transcription factors in lymphoid cell development and function. Immunol Rev 2020; 300:82-99. [PMID: 33331000 DOI: 10.1111/imr.12936] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/12/2020] [Accepted: 11/20/2020] [Indexed: 02/06/2023]
Abstract
Ikaros zinc finger transcription factors are important regulators of the gene programs underlying the development of hematopoietic cell lineages. The family consists of five members: Ikaros, Helios, Aiolos, Eos, and Pegasus, which engage in both homo- and heterotypic intrafamilial interactions to exert diverse functional effects. Pioneering studies focused on the role of these factors in early lymphoid development, as their absence resulted in severe defects in lymphocyte populations. More recent work has now begun to define nuanced, stage-specific roles for Ikaros family members in the differentiation and function of mature T, B, and innate lymphoid cell populations including natural killer (NK) cells. The precise transcriptional mechanisms by which these factors function, both independently and collaboratively, is an area of active investigation. However, several key themes appear to be emerging regarding the pathways influenced by Ikaros family members, including the end-to-end regulation of cytokine signaling. Here, we review roles for Ikaros factors in lymphoid cell development, differentiation, and function, including a discussion of the current understanding of the transcriptional mechanisms they employ and considerations for the future study of this important transcription factor family.
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Affiliation(s)
- Kaitlin A Read
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, USA.,Biomedical Sciences Graduate Program, Columbus, OH, USA
| | - Devin M Jones
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, USA.,Biomedical Sciences Graduate Program, Columbus, OH, USA
| | - Aharon G Freud
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, USA.,Department of Pathology, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, USA
| | - Kenneth J Oestreich
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, USA
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23
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Sheikh AA, Groom JR. Transcription tipping points for T follicular helper cell and T-helper 1 cell fate commitment. Cell Mol Immunol 2020; 18:528-538. [PMID: 32999454 PMCID: PMC7525231 DOI: 10.1038/s41423-020-00554-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 09/02/2020] [Indexed: 12/22/2022] Open
Abstract
During viral infection, immune cells coordinate the induction of inflammatory responses that clear infection and humoral responses that promote protection. CD4+ T-cell differentiation sits at the center of this axis. Differentiation toward T-helper 1 (Th1) cells mediates inflammation and pathogen clearance, while T follicular helper (Tfh) cells facilitate germinal center (GC) reactions for the generation of high-affinity antibodies and immune memory. While Th1 and Tfh differentiation occurs in parallel, these CD4+ T-cell identities are mutually exclusive, and progression toward these ends is determined via the upregulation of T-bet and Bcl6, respectively. These lineage-defining transcription factors act in concert with multiple networks of transcriptional regulators that tip the T-bet and Bcl6 axis in CD4+ T-cell progenitors to either a Th1 or Tfh fate. It is now clear that these transcriptional networks are guided by cytokine cues that are not only varied between distinct viral infections but also dynamically altered throughout the duration of infection. Thus, multiple intrinsic and extrinsic factors combine to specify the fate, plasticity, and function of Th1 and Tfh cells during infection. Here, we review the current information on the mode of action of the lineage-defining transcription factors Bcl6 and T-bet and how they act individually and in complex to govern CD4+ T-cell ontogeny. Furthermore, we outline the multifaceted transcriptional regulatory networks that act upstream and downstream of Bcl6 and T-bet to tip the differentiation equilibrium toward either a Tfh or Th1 fate and how these are impacted by dynamic inflammatory cues.
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Affiliation(s)
- Amania A Sheikh
- Divisions of Immunology and Molecular Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Joanna R Groom
- Divisions of Immunology and Molecular Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia. .,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.
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24
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Del Alcazar D, Wang Y, He C, Wendel BS, Del Río-Estrada PM, Lin J, Ablanedo-Terrazas Y, Malone MJ, Hernandez SM, Frank I, Naji A, Reyes-Terán G, Jiang N, Su LF. Mapping the Lineage Relationship between CXCR5 + and CXCR5 - CD4 + T Cells in HIV-Infected Human Lymph Nodes. Cell Rep 2020; 28:3047-3060.e7. [PMID: 31533030 PMCID: PMC6878759 DOI: 10.1016/j.celrep.2019.08.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 05/27/2019] [Accepted: 08/09/2019] [Indexed: 12/29/2022] Open
Abstract
CXCR5 is a key marker of follicular helper T (TFH) cells. Using primary lymph nodes (LNs) from HIV-infected patients, we identified a population of CXCR5− CD4+ T cells with TFH-cell-like features. This CXCR5− subset becomes expanded in severe HIV infection and is characterized by the upregulation of activation markers and high PD-1 and ICOS surface expression. Integrated analyses on the phenotypic heterogeneity, functional capacity, T cell receptor (TCR) repertoire, transcriptional profile, and epigenetic state of CXCR5−PD-1+ICOS+ T cells revealed a shared clonal relationship with TFH cells. CXCR5−PD-1+ICOS+ T cells retained a poised state for CXCR5 expression and exhibited a migratory transcriptional program. TCR sequence overlap revealed a contribution of LN-derived CXCR5−PD-1+ICOS+ T cells to circulating CXCR5− CD4+ T cells with B cell help function. These data link LN pathology to circulating T cells and expand the current understanding on the diversity of T cells that regulate B cell responses during chronic inflammation. Follicular helper T (TFH) cells are critical for antibody production. Del Alcazar et al. showed that TFH cells can lose their characteristic chemokine receptor, giving rise to migratory populations of CXCR5− T cells that retain B cell help function and are poised for CXCR5 expression.
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Affiliation(s)
- Daniel Del Alcazar
- Department of Medicine, Division of Rheumatology, Philadelphia VA Medical Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Yifeng Wang
- Department of Medicine, Division of Rheumatology, Philadelphia VA Medical Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Chenfeng He
- Laboratory of Systems Immunology, Department of Biomedical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712, USA
| | - Ben S Wendel
- Laboratory of Systems Immunology, Department of Biomedical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712, USA; McKetta Department of Chemical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712, USA
| | - Perla M Del Río-Estrada
- Departamento de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias, Ciudad de México, México
| | - Jerome Lin
- Institute for Biomedical Informatics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yuria Ablanedo-Terrazas
- Departamento de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias, Ciudad de México, México
| | - Michael J Malone
- Laboratory of Systems Immunology, Department of Biomedical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712, USA; Institute for Cellular and Molecular Biology, College of Natural Sciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Stefany M Hernandez
- Laboratory of Systems Immunology, Department of Biomedical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712, USA; McKetta Department of Chemical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712, USA
| | - Ian Frank
- Department of Medicine, Division of Infectious Disease, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Ali Naji
- Department of Surgery, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Gustavo Reyes-Terán
- Departamento de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias, Ciudad de México, México
| | - Ning Jiang
- Laboratory of Systems Immunology, Department of Biomedical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712, USA; Institute for Cellular and Molecular Biology, College of Natural Sciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Laura F Su
- Department of Medicine, Division of Rheumatology, Philadelphia VA Medical Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA.
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25
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Urinary Cell Transcriptome Profiling and Identification of ITM2A, SLAMF6, and IKZF3 as Biomarkers of Acute Rejection in Human Kidney Allografts. Transplant Direct 2020; 6:e588. [PMID: 32766436 PMCID: PMC7377920 DOI: 10.1097/txd.0000000000001035] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 06/16/2020] [Indexed: 01/08/2023] Open
Abstract
Identification of a shared gene expression pattern between T cell–mediated rejection (TCMR) and antibody-mediated rejection (AMR) in human kidney allografts may help prioritize targets for the treatment of both types of acute rejection.
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26
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Mechanism of Follicular Helper T Cell Differentiation Regulated by Transcription Factors. J Immunol Res 2020; 2020:1826587. [PMID: 32766317 PMCID: PMC7387970 DOI: 10.1155/2020/1826587] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/15/2020] [Indexed: 12/23/2022] Open
Abstract
Helping B cells and antibody responses is a major function of CD4+T helper cells. Follicular helper T (Tfh) cells are identified as a subset of CD4+T helper cells, which is specialized in helping B cells in the germinal center reaction. Tfh cells express high levels of CXCR5, PD-1, IL-21, and other characteristic markers. Accumulating evidence has demonstrated that the dysregulation of Tfh cells is involved in infectious, inflammatory, and autoimmune diseases, including lymphocytic choriomeningitis virus (LCMV) infection, inflammatory bowel disease (IBD), systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), IgG4-related disease (IgG4-RD), Sjögren syndrome (SS), and type 1 diabetes (T1D). Activation of subset-specific transcription factors is the essential step for Tfh cell differentiation. The differentiation of Tfh cells is regulated by a complicated network of transcription factors, including positive factors (Bcl6, ATF-3, Batf, IRF4, c-Maf, and so on) and negative factors (Blimp-1, STAT5, IRF8, Bach2, and so on). The current knowledge underlying the molecular mechanisms of Tfh cell differentiation at the transcriptional level is summarized in this paper, which will provide many perspectives to explore the pathogenesis and treatment of the relevant immune diseases.
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27
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Ridley ML, Fleskens V, Roberts CA, Lalnunhlimi S, Alnesf A, O'Byrne AM, Steel KJA, Povoleri GAM, Sumner J, Lavender P, Taams LS. IKZF3/Aiolos Is Associated with but Not Sufficient for the Expression of IL-10 by CD4 + T Cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2020; 204:2940-2948. [PMID: 32321757 PMCID: PMC7231851 DOI: 10.4049/jimmunol.1901283] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 04/01/2020] [Indexed: 01/10/2023]
Abstract
The expression of anti-inflammatory IL-10 by CD4+ T cells is indispensable for immune homeostasis, as it allows T cells to moderate their effector function. We previously showed that TNF-α blockade during T cell stimulation in CD4+ T cell/monocyte cocultures resulted in maintenance of IL-10-producing T cells and identified IKZF3 as a putative regulator of IL-10. In this study, we tested the hypothesis that IKZF3 is a transcriptional regulator of IL-10 using a human CD4+ T cell-only culture system. IL-10+ CD4+ T cells expressed the highest levels of IKZF3 both ex vivo and after activation compared with IL-10-CD4+ T cells. Pharmacological targeting of IKZF3 with the drug lenalidomide showed that IKZF3 is required for anti-CD3/CD28 mAb-mediated induction of IL-10 but is dispensable for ex vivo IL-10 expression. However, overexpression of IKZF3 was unable to upregulate IL-10 at the mRNA or protein level in CD4+ T cells and did not drive the transcription of the IL10 promoter or putative local enhancer constructs. Collectively, these data indicate that IKZF3 is associated with but not sufficient for IL-10 expression in CD4+ T cells.
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Affiliation(s)
- Michael L Ridley
- Centre for Inflammation Biology and Cancer Immunology, Department of Inflammation Biology, School of Immunology and Microbial Sciences, King's College London, London SE1 1UL, United Kingdom
| | - Veerle Fleskens
- Centre for Inflammation Biology and Cancer Immunology, Department of Inflammation Biology, School of Immunology and Microbial Sciences, King's College London, London SE1 1UL, United Kingdom
| | - Ceri A Roberts
- Centre for Inflammation Biology and Cancer Immunology, Department of Inflammation Biology, School of Immunology and Microbial Sciences, King's College London, London SE1 1UL, United Kingdom
| | - Sylvine Lalnunhlimi
- Centre for Inflammation Biology and Cancer Immunology, Department of Inflammation Biology, School of Immunology and Microbial Sciences, King's College London, London SE1 1UL, United Kingdom
| | - Aldana Alnesf
- Centre for Inflammation Biology and Cancer Immunology, Department of Inflammation Biology, School of Immunology and Microbial Sciences, King's College London, London SE1 1UL, United Kingdom
| | - Aoife M O'Byrne
- Centre for Inflammation Biology and Cancer Immunology, Department of Inflammation Biology, School of Immunology and Microbial Sciences, King's College London, London SE1 1UL, United Kingdom
| | - Kathryn J A Steel
- Centre for Inflammation Biology and Cancer Immunology, Department of Inflammation Biology, School of Immunology and Microbial Sciences, King's College London, London SE1 1UL, United Kingdom
| | - Giovanni A M Povoleri
- Centre for Inflammation Biology and Cancer Immunology, Department of Inflammation Biology, School of Immunology and Microbial Sciences, King's College London, London SE1 1UL, United Kingdom
| | - Jonathan Sumner
- Department of Infectious Diseases, School of Immunology and Microbial Sciences, King's College London, Guy's Hospital, London SE1 9RT, United Kingdom; and
| | - Paul Lavender
- MRC and Asthma UK Centre in Allergic Mechanisms of Asthma, Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, Guy's Hospital, London SE1 9RT, United Kingdom
| | - Leonie S Taams
- Centre for Inflammation Biology and Cancer Immunology, Department of Inflammation Biology, School of Immunology and Microbial Sciences, King's College London, London SE1 1UL, United Kingdom;
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28
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Shourian M, Beltra JC, Bourdin B, Decaluwe H. Common gamma chain cytokines and CD8 T cells in cancer. Semin Immunol 2020; 42:101307. [PMID: 31604532 DOI: 10.1016/j.smim.2019.101307] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Indexed: 12/20/2022]
Abstract
Overcoming exhaustion-associated dysfunctions and generating antigen-specific CD8 T cells with the ability to persist in the host and mediate effective long-term anti-tumor immunity is the final aim of cancer immunotherapy. To achieve this goal, immuno-modulatory properties of the common gamma-chain (γc) family of cytokines, that includes IL-2, IL-7, IL-15 and IL-21, have been used to fine-tune and/or complement current immunotherapeutic protocols. These agents potentiate CD8 T cell expansion and functions particularly in the context of immune checkpoint (IC) blockade, shape their differentiation, improve their persistence in vivo and alternatively, influence distinct aspects of the T cell exhaustion program. Despite these properties, the intrinsic impact of cytokines on CD8 T cell exhaustion has remained largely unexplored impeding optimal therapeutic use of these agents. In this review, we will discuss current knowledge regarding the influence of relevant γc cytokines on CD8 T cell differentiation and function based on clinical data and preclinical studies in murine models of cancer and chronic viral infection. We will restate the place of these agents in current immunotherapeutic regimens such as IC checkpoint blockade and adoptive cell therapy. Finally, we will discuss how γc cytokine signaling pathways regulate T cell immunity during cancer and whether targeting these pathways may sustain an effective and durable T cell response in patients.
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Affiliation(s)
- Mitra Shourian
- Cytokines and Adaptive Immunity Laboratory, CHU Sainte-Justine Research Center, Montreal, Quebec, Canada; Department of Microbiology and Immunology, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada
| | - Jean-Christophe Beltra
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania, Philadelphia, PA, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Benoîte Bourdin
- Cytokines and Adaptive Immunity Laboratory, CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
| | - Hélène Decaluwe
- Cytokines and Adaptive Immunity Laboratory, CHU Sainte-Justine Research Center, Montreal, Quebec, Canada; Department of Microbiology and Immunology, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada; Immunology and Rheumatology Division, Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada.
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29
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Powell MD, Read KA, Sreekumar BK, Jones DM, Oestreich KJ. IL-12 signaling drives the differentiation and function of a T H1-derived T FH1-like cell population. Sci Rep 2019; 9:13991. [PMID: 31570752 PMCID: PMC6769002 DOI: 10.1038/s41598-019-50614-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 09/13/2019] [Indexed: 12/15/2022] Open
Abstract
CD4+ T follicular helper (TFH) cells provide help to B cells and promote antibody-mediated immune responses. Increasing evidence supports the existence of TFH populations that secrete cytokines typically associated with the effector functions of other CD4+ T cell subsets. These include T helper 1 (TH1)-biased TFH (TFH1) cells that have recognized roles in both immune responses to pathogens and also the pathogenesis of autoimmune disease. Given their apparent importance to human health, there is interest in understanding the mechanisms that regulate TFH1 cell formation and function. However, their origin and the molecular requirements for their differentiation are unclear. Here, we describe a population of murine TH1-derived, TFH1-like cells that express the chemokine receptor Cxcr3 and produce both the TH1 cytokine interferon-γ and the TFH-associated cytokine interleukin-21 (IL-21). Furthermore, these TFH1-like cells promote B cell activation and antibody production at levels indistinguishable from conventional IL-6-derived TFH-like cells. Regarding their regulatory requirements, we find that IL-12 signaling is necessary for the differentiation and function of this TFH1-like cell population. Specifically, IL-12-dependent activation of STAT4, and unexpectedly STAT3, promotes increased expression of IL-21 and the TFH lineage-defining transcription factor Bcl-6 in TFH1-like cells. Taken together, these findings provide insight into the potential origin and differentiation requirements of TFH1 cells.
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Affiliation(s)
- Michael D Powell
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Roanoke, VA, USA
| | - Kaitlin A Read
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Roanoke, VA, USA.,Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, USA.,Biomedical and Veterinary Sciences Graduate Program, Virginia Tech, Virginia, USA
| | - Bharath K Sreekumar
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Roanoke, VA, USA.,Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Virginia, USA
| | - Devin M Jones
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Roanoke, VA, USA.,Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Virginia, USA
| | - Kenneth J Oestreich
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Roanoke, VA, USA. .,Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, USA. .,Virginia Tech Carilion School of Medicine, Roanoke, VA, USA.
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30
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Rébé C, Ghiringhelli F. STAT3, a Master Regulator of Anti-Tumor Immune Response. Cancers (Basel) 2019; 11:E1280. [PMID: 31480382 PMCID: PMC6770459 DOI: 10.3390/cancers11091280] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/29/2019] [Accepted: 08/29/2019] [Indexed: 12/27/2022] Open
Abstract
Immune cells in the tumor microenvironment regulate cancer growth. Thus cancer progression is dependent on the activation or repression of transcription programs involved in the proliferation/activation of lymphoid and myeloid cells. One of the main transcription factors involved in many of these pathways is the signal transducer and activator of transcription 3 (STAT3). In this review we will focus on the role of STAT3 and its regulation, e.g. by phosphorylation or acetylation in immune cells and how it might impact immune cell function and tumor progression. Moreover, we will review the ability of STAT3 to regulate checkpoint inhibitors.
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Affiliation(s)
- Cédric Rébé
- Platform of Transfer in Cancer Biology, Centre Georges François Leclerc, INSERM LNC UMR1231,University of Bourgogne Franche-Comté, F-21000 Dijon, France.
| | - François Ghiringhelli
- Platform of Transfer in Cancer Biology, Centre Georges François Leclerc, INSERM LNC UMR1231,University of Bourgogne Franche-Comté, F-21000 Dijon, France.
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31
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T follicular helper cells and T follicular regulatory cells in rheumatic diseases. Nat Rev Rheumatol 2019; 15:475-490. [DOI: 10.1038/s41584-019-0254-2] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/07/2019] [Indexed: 12/15/2022]
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32
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Powell MD, Read KA, Sreekumar BK, Oestreich KJ. Ikaros Zinc Finger Transcription Factors: Regulators of Cytokine Signaling Pathways and CD4 + T Helper Cell Differentiation. Front Immunol 2019; 10:1299. [PMID: 31244845 PMCID: PMC6563078 DOI: 10.3389/fimmu.2019.01299] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 05/22/2019] [Indexed: 12/16/2022] Open
Abstract
CD4+ T helper cells are capable of differentiating into a number of effector subsets that perform diverse functions during adaptive immune responses. The differentiation of each of these subsets is governed, in large part, by environmental cytokine signals and the subsequent activation of downstream, cell-intrinsic transcription factor networks. Ikaros zinc finger (IkZF) transcription factors are known regulators of immune cell development, including that of CD4+ T cell subsets. Over the past decade, members of the IkZF family have also been implicated in the differentiation and function of individual T helper cell subsets, including T helper 1 (TH1), TH2, TH17, T follicular (TFH), and T regulatory (TREG) cells. Now, an increasing body of literature suggests that the distinct cell-specific cytokine environments responsible for the development of each subset result in differential expression of IkZF factors across T helper populations. Intriguingly, recent studies suggest that IkZF members influence T helper subset differentiation in a feed-forward fashion through the regulation of these same cytokine-signaling pathways. Here, we review the increasingly prominent role for IkZF transcription factors in the differentiation of effector CD4+ T helper cell subsets.
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Affiliation(s)
- Michael D Powell
- Fralin Biomedical Research Institute, Virginia Tech Carilion, Roanoke, VA, United States.,Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, VA, United States
| | - Kaitlin A Read
- Fralin Biomedical Research Institute, Virginia Tech Carilion, Roanoke, VA, United States.,Biomedical and Veterinary Sciences Graduate Program, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
| | - Bharath K Sreekumar
- Fralin Biomedical Research Institute, Virginia Tech Carilion, Roanoke, VA, United States.,Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, VA, United States
| | - Kenneth J Oestreich
- Fralin Biomedical Research Institute, Virginia Tech Carilion, Roanoke, VA, United States.,Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States.,Virginia Tech Carilion School of Medicine, Roanoke, VA, United States
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33
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Abstract
CD4+ T "helper" cells are key orchestrators of adaptive immune responses. Upon activation, naïve CD4+ T cells are capable of differentiating into a number of effector subsets that perform distinct immune functions. These subsets include T helper 1 (TH1), TH2, TH9, TH17, TH22, T follicular helper (TFH), and regulatory T cell (TREG) populations. The differentiation of these subsets is dependent, in large part, on the coordinated interplay between signals from the extracellular cytokine environment and downstream transcriptional networks. The use of in vitro T helper cell culture systems has been extensively employed to aid in the elucidation of the molecular mechanisms that govern the differentiation of each effector subset. Here, we provide a detailed summary of the differentiation conditions that are utilized to generate effector CD4+ T cell populations in vitro.
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34
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Wu H, Deng Y, Zhao M, Zhang J, Zheng M, Chen G, Li L, He Z, Lu Q. Molecular Control of Follicular Helper T cell Development and Differentiation. Front Immunol 2018; 9:2470. [PMID: 30410493 PMCID: PMC6209674 DOI: 10.3389/fimmu.2018.02470] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 10/05/2018] [Indexed: 01/01/2023] Open
Abstract
Follicular helper T cells (Tfh) are specialized helper T cells that are predominantly located in germinal centers and provide help to B cells. The development and differentiation of Tfh cells has been shown to be regulated by transcription factors, such as B-cell lymphoma 6 protein (Bcl-6), signal transducer and activator of transcription 3 (STAT3) and B lymphocyte-induced maturation protein-1 (Blimp-1). In addition, cytokines, including IL-21, have been found to be important for Tfh cell development. Moreover, several epigenetic modifications have also been reported to be involved in the determination of Tfh cell fate. The regulatory network is complicated, and the number of novel molecules demonstrated to control the fate of Tfh cells is increasing. Therefore, this review aims to summarize the current knowledge regarding the molecular regulation of Tfh cell development and differentiation at the protein level and at the epigenetic level to elucidate Tfh cell biology and provide potential targets for clinical interventions in the future.
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Affiliation(s)
- Haijing Wu
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Yaxiong Deng
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha, China.,Immunology Section, Lund University, Lund, Sweden
| | - Ming Zhao
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Jianzhong Zhang
- Department of Dermatology, Peking University People's Hospital, Beijing, China
| | - Min Zheng
- Department of Dermatology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Genghui Chen
- Beijing Wenfeng Tianji Pharmaceuticals Ltd., Beijing, China
| | - Linfeng Li
- Department of Dermatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhibiao He
- Department of Emergency, Second Xiangya Hospital of Central South University, Changsha, China
| | - Qianjin Lu
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha, China
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35
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Inhibition of glucose metabolism selectively targets autoreactive follicular helper T cells. Nat Commun 2018; 9:4369. [PMID: 30348969 PMCID: PMC6197193 DOI: 10.1038/s41467-018-06686-0] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 09/14/2018] [Indexed: 01/19/2023] Open
Abstract
Follicular helper T (TFH) cells are expanded in systemic lupus erythematosus, where they are required to produce high affinity autoantibodies. Eliminating TFH cells would, however compromise the production of protective antibodies against viral and bacterial pathogens. Here we show that inhibiting glucose metabolism results in a drastic reduction of the frequency and number of TFH cells in lupus-prone mice. However, this inhibition has little effect on the production of T-cell-dependent antibodies following immunization with an exogenous antigen or on the frequency of virus-specific TFH cells induced by infection with influenza. In contrast, glutaminolysis inhibition reduces both immunization-induced and autoimmune TFH cells and humoral responses. Solute transporter gene signature suggests different glucose and amino acid fluxes between autoimmune TFH cells and exogenous antigen-specific TFH cells. Thus, blocking glucose metabolism may provide an effective therapeutic approach to treat systemic autoimmunity by eliminating autoreactive TFH cells while preserving protective immunity against pathogens. T cell functions depend on distinct metabolic fluxes. Here the authors show different metabolic requirements of humoral responses to self versus microbial antigens: while glucose is dispensable for antiviral Tfh and antibody responses, it is essential to mount these responses against autoantigens.
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36
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Qin L, Waseem TC, Sahoo A, Bieerkehazhi S, Zhou H, Galkina EV, Nurieva R. Insights Into the Molecular Mechanisms of T Follicular Helper-Mediated Immunity and Pathology. Front Immunol 2018; 9:1884. [PMID: 30158933 PMCID: PMC6104131 DOI: 10.3389/fimmu.2018.01884] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 07/31/2018] [Indexed: 12/18/2022] Open
Abstract
T follicular helper (Tfh) cells play key role in providing help to B cells during germinal center (GC) reactions. Generation of protective antibodies against various infections is an important aspect of Tfh-mediated immune responses and the dysregulation of Tfh cell responses has been implicated in various autoimmune disorders, inflammation, and malignancy. Thus, their differentiation and maintenance must be closely regulated to ensure appropriate help to B cells. The generation and function of Tfh cells is regulated by multiple checkpoints including their early priming stage in T zones and throughout the effector stage of differentiation in GCs. Signaling pathways activated downstream of cytokine and costimulatory receptors as well as consequent activation of subset-specific transcriptional factors are essential steps for Tfh cell generation. Thus, understanding the mechanisms underlying Tfh cell-mediated immunity and pathology will bring into spotlight potential targets for novel therapies. In this review, we discuss the recent findings related to the molecular mechanisms of Tfh cell differentiation and their role in normal immune responses and antibody-mediated diseases.
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Affiliation(s)
- Lei Qin
- Department of Immunology, University of Texas MD Anderson Cancer Center, Houston, TX, United States.,School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Tayab C Waseem
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Anupama Sahoo
- Department of Immunology, University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Shayahati Bieerkehazhi
- Department of Immunology, University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Hong Zhou
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Elena V Galkina
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Roza Nurieva
- Department of Immunology, University of Texas MD Anderson Cancer Center, Houston, TX, United States
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37
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Danelli L, Donnarumma T, Kassiotis G. Correlates of Follicular Helper Bias in the CD4 T Cell Response to a Retroviral Antigen. Front Immunol 2018; 9:1260. [PMID: 29951052 PMCID: PMC6008654 DOI: 10.3389/fimmu.2018.01260] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 05/18/2018] [Indexed: 12/13/2022] Open
Abstract
CD4+ T cell differentiation is influenced by a plethora of intrinsic and extrinsic factors, providing the immune system with the ability to tailor its response according to specific stimuli. Indeed, different classes of pathogens may induce a distinct balance of CD4+ T cell differentiation programmes. Here, we report an uncommonly strong bias toward follicular helper (Tfh) differentiation of CD4+ T cells reactive with a retroviral envelope glycoprotein model antigen, presented in its natural context during retroviral infection. Conversely, the response to the same antigen, presented in different immunization regimens, elicited a response typically balanced between Tfh and T helper 1 cells. Comprehensive quantitation of variables known to influence Tfh differentiation revealed the closest correlation with the strength of T cell receptor (TCR) signaling, leading to PD-1 expression, but not with surface TCR downregulation, irrespective of TCR clonotypic avidity. In contrast, strong TCR signaling leading to TCR downregulation and induction of LAG3 expression in high TCR avidity clonotypes restrained CD4+ T cell commitment and further differentiation. Finally, stunted Th1 differentiation, correlating with limited IL-2 availability in retroviral infection, provided permissive conditions for Tfh development, suggesting that Tfh differentiation is the default program of envelope-reactive CD4+ T cells.
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Affiliation(s)
- Luca Danelli
- Retroviral Immunology, The Francis Crick Institute, London, United Kingdom
| | - Tiziano Donnarumma
- Retroviral Immunology, The Francis Crick Institute, London, United Kingdom
| | - George Kassiotis
- Retroviral Immunology, The Francis Crick Institute, London, United Kingdom
- Department of Medicine, Faculty of Medicine, Imperial College London, London, United Kingdom
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